Matthews, Mark Stanley.
Harper , 1954
Buku Teks
Etzioni, Amitai, author
A Touchestone Book, 1994
Buku Teks
John E. Tropman, John L. Erlich, Jack Rothman
F.E.Peacock, 2001
Buku Teks
edited by John E. Tropman, John L. Erlich, Jack Rothman
F.E.Peacock, 1995
Buku Teks
Shields, James J,Jr
Frederick A. Preager, 1967
Buku Teks